Coinstar deal gives an extra $5 in Amazon MP3s

Redeem $5-$25 worth of coins at a Coinstar machine for an Amazon MP3 gift card by May 31 and get an extra $1-$5 to buy music.

The free MP3 bonus comes via e-mail a few weeks after you redeem your initial gift card. You will get a $1 bonus for every $5 you enter into your Amazon.com account in May 2010. You must use the bonus by June 30. Find a Coinstar near you.

Caveats: redeem your initial Amazon PM3 gift card by May 31 at 11:59 PM PST. Max bonus is $5. If you have not received your code by June 4, contact Amazon. Read the official rules here.